Stoney Indian Language (Nakoda)

Stoney (known to its own speakers as Nakoda or Nakota) is a
Siouan language of the Northern Plains.
A second language, Assiniboine, is also known as
Nakota and is closely related to Stoney, but people speaking the languages cannot understand each other
well, so despite their similarities, most linguists consider them separate languages, like French and Spanish.